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Interpret Your Urine Specific Gravity Results
Enter your USG value below and get an instant, free AI interpretation — a plain-English explanation checked against WHO/IFCC reference ranges.
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This AI-generated interpretation is for educational purposes only and does not constitute medical advice, diagnosis, or treatment. Results may vary based on individual health factors not captured here.
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Urine Specific Gravity Normal Ranges
Urine specific gravity (USG) measures the concentration of solutes in urine relative to pure water (specific gravity 1.
| Reference Range | Unit | Notes |
|---|---|---|
| 1.005 – 1.03 | g/mL | Random specimen; normal range varies with hydration status |
Common Causes of High USG
Dehydration (most common cause of high USG)Syndrome of Inappropriate Antidiuretic Hormone (SIADH — inappropriately concentrated urine)Heart failure, cirrhosis, nephrotic syndrome (decreased effective circulating volume stimulates ADH)
Common Causes of Low USG
Overhydration or excessive fluid intake (diluted urine)Diabetes insipidus (central or nephrogenic — inability to concentrate urine)Early CKD with impaired tubular concentrating ability
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